<template>
	<uni-popup ref="popup" type="bottom" :safe-area="false">
		<view class="tpf-time-range-section">
			<view class="tpf-time-range-title-section flex flex-align-center flex-pack-justify">
				<text class="tpf-time-range-title-txt tpf-time-range-cancel" @tap="closePopup('cancel')">取消</text>
				<text class="tpf-time-range-title-txt tpf-time-range-title">时间范围选择</text>
				<text class="tpf-time-range-title-txt tpf-time-range-sure" @tap="closePopup('sure')">确定</text>
			</view>
			<view class="tpf-time-range-main flex flex-l flex-align-center flex-pack-justify">
				<view class="tpf-time-range-item flex flex-v flex-align-center">
					<text class="tpf-start-time">开始时间</text>
					<picker-view class="flex-1 tpf-picker-view" :value="startDefaultTimeArr" indicator-style="height: 50px;" @change="startTimeChange">
						<picker-view-column>
							<view class="tpf-time-range-picker-item flex flex-align-center flex-pack-center" v-for="(item,index) in createTimeRange.hours" :key="index">{{item}}</view>
						</picker-view-column>
						<picker-view-column>
							<view class="tpf-time-range-picker-item flex flex-align-center flex-pack-center" v-for="(item,index) in createTimeRange.startMinutes" :key="index">{{item}}</view>
						</picker-view-column>
					</picker-view>
				</view>
				<text class="tpf-time-divide"> - </text>
				<view class="tpf-time-range-item flex flex-v flex-align-center">
					<text class="tpf-start-time">结束时间</text>
					<picker-view class="flex-1 tpf-picker-view" :value="endDefaultTimeArr" indicator-style="height: 50px;" @change="endTimeChange">
						<picker-view-column>
							<view class="tpf-time-range-picker-item flex flex-align-center flex-pack-center" v-for="(item,index) in createTimeRange.hours" :key="index">{{item}}</view>
						</picker-view-column>
						<picker-view-column>
							<view class="tpf-time-range-picker-item flex flex-align-center flex-pack-center" v-for="(item,index) in createTimeRange.endMinutes" :key="index">{{item}}</view>
						</picker-view-column>
					</picker-view>
				</view>
			</view>
		</view>
	</uni-popup>
</template>

<script>
/**
* TimeRange 时间范围选择
* @description 对时间（时、分）区间进行选择，限制选择范围
* @property {string} startTime 定义开始时间
* @property {string} startDefaultTime 定义开始默认时间
* @property {string} endTime 定义结束时间
* @property {string} endDefaultTime 定义结束默认时间
* @event {Function()} name 
*/
export default{
	name:"TpfTimeRange",
	props:{
		// 开始时间
		startTime:{
			type:String,
			default:"00:00",
			validator:(value)=>{
				return /(((2[0-3])|([0-1][0-9])):[0-5][0-9])|24:00/.test(value);
			}
		},
		// 开始默认时间
		startDefaultTime:{
			type:String,
			// #ifdef MP-WEIXIN
			default:"00:00",
			// #endif
			// #ifndef MP-WEIXIN
			default(){
				return this.startTime;
			},
			// #endif
			
			validator:(value)=>{
				return /(((2[0-3])|([0-1][0-9])):[0-5][0-9])|24:00/.test(value);
			}
		},
		// 结束时间
		endTime:{
			type:String,
			default:"23:59",
			validator:(value)=>{
				return /(((2[0-3])|([0-1][0-9])):[0-5][0-9])|24:00/.test(value);
			}
		},
		// 结束默认时间
		endDefaultTime:{
			type:String,
			// #ifdef MP-WEIXIN
			default:"23:59",
			// #endif
			// #ifndef MP-WEIXIN
			default(){
				return this.endTime;
			},
			// #endif
			validator:(value)=>{
				return /(((2[0-3])|([0-1][0-9])):[0-5][0-9])|24:00/.test(value);
			}
		}
	},
	data(){
		return {
			startDefaultTimeArr:[0,0],
			endDefaultTimeArr:[0,0],
		}
	},
	methods:{
		startTimeChange(e){
			this.startDefaultTimeArr = e.detail.value;
			if(this.compareTwoTimeRange(e.detail.value,this.endDefaultTimeArr)) this.endDefaultTimeArr = e.detail.value;
		},
		endTimeChange(e){
			this.endDefaultTimeArr = e.detail.value;
			if(this.compareTwoTimeRange(this.startDefaultTimeArr,e.detail.value)) this.startDefaultTimeArr = e.detail.value;
		},
		open(){
			this.$refs.popup.open();
		},
		closePopup(action=""){
			if(this.compareTwoTimeRange(this.startDefaultTimeArr , this.endDefaultTimeArr)){
				uni.showToast({
					title:"开始时间不能大于结束时间",
					icon:'none'
				});
				return false;
			}
			let startTime = this.createTimeRange.hours[this.startDefaultTimeArr[0]]+":"+this.createTimeRange.startMinutes[this.startDefaultTimeArr[1]];
			let endTime = this.createTimeRange.hours[this.endDefaultTimeArr[0]]+":"+this.createTimeRange.endMinutes[this.endDefaultTimeArr[1]];
			this.$emit('timeRange',[
				startTime,endTime
			]);
			this.$refs.popup.close();
		},
		compareTwoTimeRange(arr1=[],arr2=[]){
			if(arr1[0]>arr2[0] || (arr1[0] == arr2[0] && arr1[1] > arr2[1])) return true;
			return false;
		},
	},
	beforeCreate(){
		// 初始化小时
		let hour = [],minute=[];
		for(let h=0;h<=24;h++){
			hour.push(h<10?'0'+h:h+'');
		}
		for(let m=0;m<60;m++){
			minute.push(m<10?'0'+m:m+'');
		}
		this.timeRange = {hour,minute};
	},
	created() {
		
	},
	computed:{
		createTimeRange(){
			let {startTime,startDefaultTime,endTime,endDefaultTime} = this.timeRangeDateChange;
			let startTimeArr = startTime.split(":"),endTimeArr = endTime.split(":");
			let hours = this.timeRange.hour.slice(
				this.timeRange.hour.findIndex(item=>item == startTimeArr[0]),
				this.timeRange.hour.findIndex(item=>item == endTimeArr[0])+1,
			);

			let startMinutes = null;
			if(startTimeArr[0] == endTimeArr[0]){
				startMinutes = this.timeRange.minute.slice(
					this.timeRange.minute.findIndex(item=>item == startTimeArr[1]),
					this.timeRange.minute.findIndex(item=>item == endTimeArr[1])+1,
				);
			}else{
				if(this.startDefaultTimeArr[0] == 0){
					startMinutes = this.timeRange.minute.slice(
						this.timeRange.minute.findIndex(item=>item == startTimeArr[1])
					);
				}
				else if(this.startDefaultTimeArr[0] == hours.length-1){
					startMinutes = this.timeRange.minute.slice(
						0,
						this.timeRange.minute.findIndex(item=>item == endTimeArr[1])+1
					);
				}else{
					startMinutes = this.timeRange.minute;	// 完整数据
				}
			}
			let endMinutes = null;
			if(startTimeArr[0] == endTimeArr[0]){
				endMinutes = this.timeRange.minute.slice(
					this.timeRange.minute.findIndex(item=>item == startTimeArr[1]),
					this.timeRange.minute.findIndex(item=>item == endTimeArr[1])+1,
				);
			}
			else{
				if(this.endDefaultTimeArr[0] == 0){
					endMinutes = this.timeRange.minute.slice(
						this.timeRange.minute.findIndex(item=>item == startTimeArr[1])
					);
				}
				else if(this.endDefaultTimeArr[0] == hours.length-1){
					endMinutes = this.timeRange.minute.slice(
						0,
						this.timeRange.minute.findIndex(item=>item == endTimeArr[1])+1
					);
				}else{
					endMinutes = this.timeRange.minute;	// 完整数据
				}
			}
			return {
				hours,
				startMinutes,
				endMinutes,
			}
		},
		// 用于监听属性的变化
		timeRangeDateChange(){
			let {startTime,startDefaultTime,endTime,endDefaultTime} = this;
			startTime = startTime<endTime?startTime:endTime;
			startDefaultTime = startDefaultTime>=startTime && startDefaultTime<=endTime?startDefaultTime:startTime;
			endDefaultTime = endDefaultTime>=startTime && endDefaultTime<=endTime && endDefaultTime>=startDefaultTime?endDefaultTime:startDefaultTime;
			return {
				startTime,
				startDefaultTime,
				endTime,
				endDefaultTime
			}
		}
	},
	watch:{
		timeRangeDateChange:{
			handler(newVal,oldVal){
				let {startTime,startDefaultTime,endTime,endDefaultTime} = newVal;
				let startTimeArr = startTime.split(":"),endTimeArr = endTime.split(":");
				let startDefaultTimeArr = startDefaultTime.split(":"),endDefaultTimeArr = endDefaultTime.split(":");
				
				let hours = this.timeRange.hour.slice(
					this.timeRange.hour.findIndex(item=>item == startTimeArr[0]),
					this.timeRange.hour.findIndex(item=>item == endTimeArr[0])+1,
				);
				
				this.$set(this.startDefaultTimeArr,0, hours.includes(startDefaultTimeArr[0])?hours.findIndex(item=>item == startDefaultTimeArr[0]):0);
				this.$set(this.endDefaultTimeArr,0, hours.includes(endDefaultTimeArr[0])?hours.findIndex(item=>item == endDefaultTimeArr[0]):this.startDefaultTimeArr[0]);
				
				let startMinute = null,endMinute = null;
				if(startTimeArr[0] == endTimeArr[0]){
					startMinute = endMinute = this.timeRange.minute.slice(
						this.timeRange.minute.findIndex(item=>item == startTimeArr[1]),
						this.timeRange.minute.findIndex(item=>item == endTimeArr[1])+1,
					);
				}
				else{
					if(startDefaultTime.split(":")[0] == startTimeArr[0]){
						startMinute = this.timeRange.minute.slice(
							this.timeRange.minute.findIndex(item=>item == startTimeArr[1]),
						);
					}
					else if(startDefaultTime.split(":")[0] == endTimeArr[0]){
						startMinute = this.timeRange.minute.slice(
							0,
							this.timeRange.minute.findIndex(item=>item == endTimeArr[1])+1,
						);
					}else{
						startMinute = this.timeRange.minute;
					}
					if(endDefaultTime.split(":")[0] == startTimeArr[0]){
						endMinute = this.timeRange.minute.slice(
							this.timeRange.minute.findIndex(item=>item == startTimeArr[1]),
						);
					}else if(endDefaultTime.split(":")[0] == endTimeArr[0]){
						endMinute = this.timeRange.minute.slice(
							0,
							this.timeRange.minute.findIndex(item=>item == endTimeArr[1])+1,
						);
					}else{
						endMinute = this.timeRange.minute;
					}
				}
				this.$set(this.startDefaultTimeArr,1, startMinute.includes(startDefaultTimeArr[1])?startMinute.findIndex(item=>item == startDefaultTimeArr[1]):0);
				this.$set(this.endDefaultTimeArr,1, endMinute.includes(endDefaultTimeArr[1])?endMinute.findIndex(item=>item == endDefaultTimeArr[1]):this.startDefaultTimeArr[1]);
			},
			deep:true,		// 深度监听
			immediate:true,	// 初始化立即执行
		}
	}
}
</script>

<style lang="scss">
.flex{display:flex;}
.flex-v{flex-direction:column;}
.flex-wrap{flex-wrap:wrap;}
.flex-row-wrap{flex-flow:row wrap;}
.flex-1{flex:1;}
.flex-align-center{align-items:center;}
.flex-pack-center{justify-content:center;}
.flex-pack-justify{justify-content:space-between;}
.flex-pack-around{justify-content:space-around;}
.tpf-time-range-section{
	background-color: #FFF;
}
.tpf-time-range-title-section{
	padding: 20rpx;
	border-bottom: 1px #f2f2f2 solid;
}
.tpf-time-range-title-txt{
	font-size: 28rpx;
}
.tpf-time-range-title{
	font-size:32rpx;
}
.tpf-time-range-main{
	padding: 0 20rpx 20rpx;
}
.tpf-time-range-item{
	height: 400rpx;
	width: 300rpx;
}
.tpf-start-time{
	padding: 20rpx 0;
}
.tpf-picker-view{
	width:280rpx;
}
</style>